[PATCH] f2fs: introduce valid_ipu_blkaddr to clean up

[Jaegeuk Kim]

This patch introduces valid_ipu_blkaddr to clean up checking block address for
inplace-update.

Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
---
 fs/f2fs/data.c | 17 ++++++++++++-----
 1 file changed, 12 insertions(+), 5 deletions(-)

diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c
index b2992dbdd11e..c2b98e44c5f3 100644
--- a/fs/f2fs/data.c
+++ b/fs/f2fs/data.c
@@ -1331,8 +1331,6 @@ static int encrypt_one_page(struct f2fs_io_info *fio)
 
 static inline bool need_inplace_update(struct f2fs_io_info *fio)
 {
-       if (fio->old_blkaddr == NEW_ADDR)
-               return false;
        if (is_cold_data(fio->page))
                return false;
        if (IS_ATOMIC_WRITTEN_PAGE(fio->page))
@@ -1341,6 +1339,15 @@ static inline bool need_inplace_update(struct 
f2fs_io_info *fio)
        return need_inplace_update_policy(fio->page->mapping->host, fio);
 }
 
+static inline bool valid_ipu_blkaddr(struct f2fs_io_info *fio)
+{
+       if (fio->old_blkaddr == NEW_ADDR)
+               return false;
+       if (fio->old_blkaddr == NULL_ADDR)
+               return false;
+       return true;
+}
+
 int do_write_data_page(struct f2fs_io_info *fio)
 {
        struct page *page = fio->page;
@@ -1354,8 +1361,8 @@ int do_write_data_page(struct f2fs_io_info *fio)
        if (need_inplace_update(fio) &&
                        f2fs_lookup_extent_cache(inode, page->index, &ei)) {
                fio->old_blkaddr = ei.blk + page->index - ei.fofs;
-               if (fio->old_blkaddr != NULL_ADDR &&
-                               fio->old_blkaddr != NEW_ADDR) {
+
+               if (valid_ipu_blkaddr(fio)) {
                        ipu_force = true;
                        goto got_it;
                }
@@ -1382,7 +1389,7 @@ int do_write_data_page(struct f2fs_io_info *fio)
         * If current allocation needs SSR,
         * it had better in-place writes for updated data.
         */
-       if (ipu_force || need_inplace_update(fio)) {
+       if (ipu_force || (valid_ipu_blkaddr(fio) && need_inplace_update(fio))) {
                f2fs_bug_on(fio->sbi, fio->cp_rwsem_locked);
                f2fs_put_dnode(&dn);
                err = rewrite_data_page(fio);
-- 
2.11.0